Electric coupling.



PATENTED FEB. 6, 1906. J J. DOSSERT.

ELECTRIC GOUPLING.

APPLICATION FILED AUG. 17. 1904.

NirED lSTATES PATENT c)Finca.

JOHN J. DOSSERT, OF NEW YORK, N. Y.,VASSIGNOR TO DOSSERT &

- COMPANY, A CORPORATION OF NEW YORK.

ELECTRIC COUPLING.

Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed August 17, 1904. Serial No. 221,063.

To all whom t may concern:

4 Be it known that I, JOHN J. Dossnar, a citizen of the United States,and a resident of New York, county of New York, State of New York, haveinvented certain new and useful Improvements in Electric Couplers, ofwhich the following is a specification.

The subject of the present invention is a connection or coupler forsolid wires or cables the same being adapted to join and form goodelectrical and mechanical connection for solid wires of the samediameter, solid wires of different diameters, cables of the samediameter, cables of diHerent diameters, or solid wires and cables havingthe same or different diameters-that is to say, the coupling hereindescribed may form a satisfactory union for -electrical conductors ofwhatever description and of different sizes if for any reason such aunion should be desirable. Moreover, the coupling may unite a conductorof either type to an end or terminal connection without beingnecessarily confined to the joining of the ends of two continuousconducting wires or cables. Y

The principle upon which the present in- `vention is based is that ofusing coupling members having. tapering interior surfaces in combinationwith split cones adapted to be compressed inside the said couplingmembers. The internal diameters of the coupling members will be variedaccording to the size of the wire or cable to which a given member is tobe attached.

By the use of the split-sleeve connection herein described the ends orterminals of two wires or cables of a wire and a cable can be providedwith a irm mechanical joint and good electrical connection whether thediameters of the attached or connected wires or cables are the same ordierent.

I have illustrated my invention in the accompanying drawings, in which-Figure 1 is a partly-sectional longitudinal view showing two electricwires coupled together at their ends by means of my improved couplingdevice. Fig. 2 is an elevation of the same. Figs. 3, 4, 5, and 6 aredetails of different parts of the coupling; and Fig. 7 is a view similarto Fig. 1, illustrating one of my cou lings applied to the end of acable on one si eand to a solid wire of smaller diameter on the otherside.

In Fig. 1 of the drawings, l and 2 are the ends or terminals of twowires which are to be coupled together. The wires are adapted to enteropenings 3 3 in an intermediate coupling-piece 4, as shown. The wiresalso pass through split sleeves having tapering surfaces 5 5, the innerends of which rest against tapering surfaces on the inside of thecoupler 4, such tapering surfaces having the same slope as the exteriorof the tapering sleeve 5.

Surrounding both the split sleeve and the intermediate couplinfT 4 arecoupling devices 6 and 7, having at their outer ends sloping internalsurfaces corresponding to the outer ends of the split sleeve 5 5. Theinner ends of the coupling devices 6 and 7 are screwthreaded to engagewith the ends of the intermediate coupler 4.

It is clear that by screwing the coupler 6,

for example, tightly upon the coupler 4 rcssure will be exerted in alongitudinal irection upon one of the split sleeves 5, which will resultin a radial contraction of the said split sleeve, causing it to bepressed tightly against the wire l. A similar action takes place uponthe wire 2 and the split sleeve 5, surrounding the said wire when thecoupling device 7 is tightened in the same way. It will be understoodthat the screwthreads upon the intermediate coupler are cut in oppositedirections, so that the tightening of either of the coupling devices 6and 7 will tend also to tighten the other coupling device.

I lind that by the use of this coupling a Very firm mechanicalconnection can be made between the coupling and the wire to which it isattached, resulting in a strong mechanical construction which willresist great longitudinal strain, while at the same time the electricalcontinuity of the circuit is thoroughly maintained. i

In the last ligure of the drawings I illustrate how a cable (shown at 8)may be connected to a wire, (shown at 9.) The action is precisely thesame as in the case of coupling two wires or two cables together.Moreover, I show the wire in this instance as of smaller diameter thanthe cable. This can readily be understood from the drawing itself.

I claim as my invention- 1. A connector for electrical conductorscomprising end coupling-sections having conductor-receiving openings, anintermedi- IOO ate coupling-section having a conductor-rewhich areoppositely tapered, and two split 15 ceiving opening, split sleeveshaving opposleeveshavingoppositely-taperedendshoused sitely-tapered endshoused between each of within the tapered bores of said intermediatesaid end coupling-sections, and said intermeand end coupling-sectionsand adapted to be 5 diate section, and means for drawing said forcedinto close mechanical and electrical end sections toward saidintermediate seccontact with conductor ends when the coup- 2o tion tocompress said split sleeves, and force ling-sections are drawn together.them into close mechanical and electrical Signed at New York, in thecounty of New contact with conductor ends. York and State of New York,this 16th day Io 2. A connector for electrical conductors of August, A.D. 1904.

comprising two internally-threaded end JOHN J. DOSSERT.

coupling-sections having oppositely-tapered Witnesses: bores anexternally-threaded intermediate GEORGE H. STOCKBRIDGE, Jr.,coupling-section having a bore, the ends of THos. H. BROWN.

